CN103581077A - Signal processing device, electronic apparatus, and signal processing method - Google Patents

Signal processing device, electronic apparatus, and signal processing method Download PDF

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Publication number
CN103581077A
CN103581077A CN201310192281.0A CN201310192281A CN103581077A CN 103581077 A CN103581077 A CN 103581077A CN 201310192281 A CN201310192281 A CN 201310192281A CN 103581077 A CN103581077 A CN 103581077A
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China
Prior art keywords
signal
equalizer
postemphasising
data
serial line
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CN201310192281.0A
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Chinese (zh)
Inventor
李哲浩
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems

Abstract

A signal processor includes a receiver to receive data to be transmitted to an external device, a signal generator to process de-emphasis of the received data using a preset de-emphasis value and to output the resultant data to the external device, an information acquisition unit to receive equalizer information from the external device, and a controller to control the de-emphasis value of the signal generator based on the received equalizer information.

Description

Signal processor, electronic installation and signal processing method
The cross reference of related application
The application requires the priority of the korean patent application No.10-2012-0086814 that Korea S Department of Intellectual Property submits Augusts 8 in 2012 based on 35U.S.C. § 119, its whole disclosures are incorporated herein by reference.
Technical field
According to disclosed apparatus and method provided herein, relate to signal processor, comprise electronic installation, signal processing method and the computer readable recording medium storing program for performing of this signal processor, more specifically, relate to and can control adaptively the signal processor of the yield value that postemphasises of postemphasis (de-emphasis), the electronic installation that comprises this signal processor, signal processing method and computer readable recording medium storing program for performing according to system environments.
Background technology
Electronic installation comprises various interface, and recently, high-speed serial bus has obtained application as the serial ATA (SATA) of communicating by letter with hard disk or CD-ROM drive.
Universal serial bus refers to the interface that transmits data based on each communication one bit.Due to nearest universal serial bus high-speed cruising, therefore, may there is intersymbol interference (ISI), skin effect (skin effect) (or rough wave effect (wave effect)) and electrical loss." skin effect " is illustrated in conductivity decline or the resistivity during flow transmission in the material with high conductivity (streaming) meter record (logging), observed to be increased, and " electrical loss " represents the loss occurring when dielectric being applied to interchange (AC) electric field." ISI " represents to disturb, wherein, the symbol waveform of another time slot of symbol waveform influence of a time slot, this is due to the limit bandwidth of transmission path or amplifier or due to the nonlinear characteristic of phase place on transmission path.Figure 18 illustrates the distorted wave that ISI causes.
Can compensate ISI by the technology of postemphasising or equalizer techniques.Particularly, the transmitting terminal of universal serial bus considers that by the use technology of postemphasising ISI carrys out transmitted signal, and the receiving terminal of universal serial bus improves the waveform receiving by equalizer techniques.Figure 19 illustrates the example of the signal waveform of having applied the technology of postemphasising and equalizer techniques.More specifically, Figure 19 A shows does not have to utilize the signal waveform of postemphasising with equalizer techniques, Figure 19 B shows the signal waveform of only utilizing the technology of postemphasising, Figure 19 C shows the signal waveform of only utilizing equalizer techniques, and Figure 19 D shows and utilizes the two signal waveform of the technology of postemphasising and equalizer techniques.
Meanwhile, it is more complicated that transmission channel becomes, and signal moves with more speed.Conventionally be difficult to only utilize a kind of technology that signal compensation is arrived to aspiration level.Therefore, when sending the high speed signal of GHz bandwidth, by application postemphasis technology and equalizer techniques the two guarantee signal quality.
Yet, when technology and equalizer techniques are postemphasised in application, the value of postemphasising that conventional serial interface utilization is fixing and fixing equalizer values.Therefore, signal distortion more when connecting new equipment.This is further describing referring to Figure 20.
Figure 20 shows the simulation result of applying equalizer techniques and do not apply equalizer techniques in having applied identical same systems of postemphasising.
Traditionally, with fixing postemphasising, realize and postemphasising and equilibrium with equalizer values, wherein for example, via various meters record (logging) methods (, emulation), optimize and postemphasis and equalizer values.Therefore, signal transmission does not have distortion, as shown in FIG. 20 A.
Yet, if user selects and install new equipment, because system does not have to find the equalizer values setting for new installed equipment, but do not consider the equilibrium characteristic of new installed equipment, arrange and utilize the default value of postemphasising.
If the value of postemphasising is set to high-gain values, and if the equalizer of new installed equipment is also set to high-gain values, system can be carried out chaotic operation owing to causing in waveform compared with strong distortion so, as shown in Figure 20 B.Therefore,, according to the characteristic of postemphasising, characteristics of signals may be deteriorated more serious than not having in balanced situation.
Summary of the invention
The exemplary embodiment of the present invention's design has overcome above-mentioned shortcoming and above other shortcomings of not describing.Equally, the present invention's design does not need to overcome above-mentioned shortcoming, and the exemplary embodiment of the present invention's design can not overcome above-mentioned any problem.
The total design of the present invention provides according to system environments adjusts the signal processor of the yield value that postemphasises, the electronic installation that comprises this signal processor, signal processing method and computer readable recording medium storing program for performing adaptively.
Supplementary features and the use of the total design of the present invention partly can propose in the subsequent section of specification, and partly will become clear according to specification, or can know by putting into practice the total design of the present invention.
Above-mentioned and/or other features of the total design of the present invention and with can be by providing a kind of signal processor to realize, this signal processor comprises: receiver, reception will send to the data of external equipment; Signal generator, uses the default value of postemphasising to the data that receive processings of postemphasising, and exports to external equipment the data that processing obtains; Information acquisition unit, receives equalizer information from external equipment; And controller, the value of postemphasising of the equalizer information control signal generator based on receiving.
Equalizer information can be included in the yield value of the equalizer arranging in external equipment.
Signal processor can also comprise: storage device, and to a plurality of equalizer yield values of look-up table stores and a plurality of the postemphasis yield values corresponding with these a plurality of equalizer yield values.Controller can be based on storing in storage device look-up table and the equalizer information receiving, the yield value that postemphasises of control signal generator.
Look-up table can meet first condition or second condition is classified and storage is postemphasised yield value based on the yield value that postemphasises, and controller can basis signal processor mode of operation, according to the yield value that postemphasises that postemphasises yield value and meet second condition that meets first condition, carry out the yield value that postemphasises of control signal generator.
First condition can be paid the utmost attention to the size of signal waveform, and second condition can be paid the utmost attention to the width of signal timing.
Controller can control signal generator before the value of postemphasising of adjusting signal generator with the first communication speed communication, and after the value of postemphasising of adjustment signal generator with the second communication speed communication faster than the first communication speed.
Signal processor can also comprise: signal receiver, is used default equalizer values to carry out equilibrium treatment to the signal receiving from external equipment; And output unit, output is through the signal of equilibrium treatment.
Information acquisition unit can be used signal receiver to receive the equalizer information of external equipment.
Information acquisition unit can be different by the interface method from signal generator interface method receive the equalizer information of external equipment.
Above-mentioned and/or other features of the total design of the present invention and with also can be by providing a kind of signal processor to realize, this signal processor comprises: signal receiver, is used default equalizer values to carry out equilibrium treatment to the signal receiving from external equipment; Output unit, output is through the signal of equilibrium treatment; And information provider, to external equipment, provide the equalizer information corresponding with default equalizer values.
Signal processor can also comprise: receiver, and reception will send to the data of external equipment; And signal generator, use the default value of postemphasising to the data that receive processings of postemphasising, and export to external equipment the data that processing obtains.Information provider can be used signal generator to provide equalizer information to external equipment.
Information provider can be different by the interface method from signal receiver interface method to external equipment, provide equalizer information.
Above-mentioned and/or other features of the total design of the present invention and with also can be by providing a kind of electronic installation to realize, this electronic installation comprises: the functional element of execution predetermined function; Control the controller of functional element; And communication interface, between functional element and controller, transmit and receive data.Communication interface can comprise: the first serial line interface, from controller receiving data, postemphasises and processes and export the data that processing obtains the data that receive; The second serial line interface, receives from the signal of the first serial line interface output, carries out to the received signal equilibrium treatment, and provides the signal through equilibrium treatment to functional element.The first serial line interface can receive equalizer information from the second serial line interface, and the equalizer information based on receiving is adjusted the yield value that postemphasises of the first serial line interface.
The second serial line interface can receive data from functional element, to the data processing of postemphasising, and the data that obtain are processed in output, the first serial line interface can receive from the signal of the second serial line interface output, carry out to the received signal equilibrium treatment, and the signal obtaining is provided to controller.
The second serial line interface can receive equalizer information from the first serial line interface, and the equalizer information based on receiving is adjusted the yield value that postemphasises of the second serial line interface.
The first serial line interface can receive the information of postemphasising from the second serial line interface, and the information of postemphasising based on receiving is adjusted the equalizer yield value of the first serial line interface.
Controller can control communication interface before adjusting the value of postemphasising of the first serial line interface with the first communication speed communication, and after the value of postemphasising of adjustment the first serial line interface with the second communication speed communication faster than the first communication speed.
This electronic installation can also comprise: storage device, and store look-up tables, look-up table comprises a plurality of equalizer yield values and a plurality of the postemphasis yield values corresponding with these a plurality of equalizer yield values.The look-up table that controller can be based on storing in storage device and the equalizer information receiving are adjusted the yield value that postemphasises of communication interface.
Above-mentioned and/or other features of the total design of the present invention and with also can be by providing a kind of signal processing method to realize, this signal processing method comprises: reception will send to the data of external equipment; Use the default value of postemphasising to postemphasis and process the data that also transmission processing obtains the data that receive; From external equipment, receive equalizer information; And default value of postemphasising of the equalizer information adjustment based on receiving.
Above-mentioned and/or other features of the total design of the present invention and with also can be by providing a kind of computer readable recording medium storing program for performing to realize, this computer readable recording medium storing program for performing comprises that computer-readable code is as program, to realize the signal processing method in signal processor, wherein signal processing method can comprise: reception will send to the data of external equipment; Use the default value of postemphasising to postemphasis and process the data that also transmission processing obtains the data that receive; From external equipment, receive equalizer information; And default value of postemphasising of the equalizer information adjustment based on receiving.
Above-mentioned and/or other features of the total design of the present invention and with also can be by providing a kind of signal processing system to realize, this signal processing system comprises: first signal processor and secondary signal processor.First signal processor can comprise: receiver, and reception will send to the data of external equipment; Signal generator, uses the default value of postemphasising to the data that receive processings of postemphasising, and exports to external equipment the data that processing obtains; Information acquisition unit, receives equalizer information from external equipment; And controller, the value of postemphasising of the equalizer information control signal generator based on receiving.The second message handler can comprise: signal receiver, receives the output data of the signal generator of first signal processor, and use default equalizer values to carry out equilibrium treatment to signal; Output unit, output is through the signal of equilibrium treatment; And information provider, to the information acquisition unit of first signal processor, provide the equalizer information corresponding with default equalizer values.
Above-mentioned and/or other features of the total design of the present invention and with also can be by providing a kind of signal processor to realize, this signal processor comprises: receiver, reception will send to the data of external equipment; And signal generator, use the default value of postemphasising to carry out first processing of postemphasising to the data that receive, and use in response to through first the postemphasis characteristic of the data processed and variable value of postemphasising of receiving from external equipment, the data that receive are carried out to second processing of postemphasising.
The characteristic of the data of processing through postemphasising one of can comprise during the transmission speed of data and width are regularly at least.
The variable value of postemphasising can be corresponding to the mode of operation of external equipment.
External equipment can be that next new external equipment of communicating by letter with signal processor is installed.Signal generator can postemphasis to carry out according to first of data and communicate by letter with first of external equipment, and can be according to the second communication of variable postemphasis execution and the external equipment of data.
External equipment can be that the functional unit of new function is provided to electronic installation, and signal generator can be with external device communication to carry out the new function of electronic installation.
Accompanying drawing explanation
By with reference to accompanying drawing, some exemplary embodiments of the present invention's design are described, above-mentioned and/or other features and the use of the total design of the present invention will be clearer, in the accompanying drawings:
Fig. 1 shows the block diagram of the electronic installation of the embodiment of total design according to the present invention;
Fig. 2 shows according to the present invention the detailed diagram of electronic installation in Fig. 1 of embodiment of total design;
Fig. 3 shows according to the present invention the block diagram of electronic installation in Fig. 1 of embodiment of total design;
Fig. 4 shows the block diagram of the communication interface of the embodiment of total design according to the present invention;
Fig. 5 shows according to the present invention the block diagram of the first signal processor of communication interface in Fig. 4 of embodiment of total design;
Fig. 6 shows the know-why of postemphasising;
Fig. 7 shows the figure of the implementation of postemphasising;
Fig. 8 shows according to the present invention the block diagram of the secondary signal processor of communication interface in Fig. 4 of embodiment of total design;
Fig. 9 shows the know-why of equalizer;
Figure 10 shows the structure of DFE equalizer;
Figure 11 shows the signal processing results of equalizer;
Figure 12 shows the operation of the transmission equalizer information of the embodiment of total design according to the present invention;
Figure 13 shows the operation of the transmission equalizer information of the embodiment of total design according to the present invention;
Figure 14 shows the look-up table of the embodiment of total design according to the present invention;
Figure 15 shows the look-up table of another embodiment of total design according to the present invention;
Figure 16 shows according to the present invention the flow chart of the signal processing method in the electronic installation of embodiment of total design;
Figure 17 shows according to the present invention the flow chart of the signal processing method in the electronic installation of embodiment of total design;
Figure 18 shows the wave distortion due to ISI;
Figure 19 shows and is postemphasising and/or waveform during equalizer processes; And
Figure 20 shows the simulation result of having applied equalizer and not applied equalizer in having applied identical same systems of postemphasising.
Embodiment
Now in detail, with reference to the embodiment of the total design of the present invention, some of them example is shown in the drawings, wherein, runs through element like the similar Reference numeral representation class of accompanying drawing.With reference to accompanying drawing, embodiment is being described below, so that total design of the present invention to be described simultaneously.
For example structure and element are used for assisting complete understanding the present invention design to the content of recording in specification in detail.Therefore, obviously can be in the situation that do not have these concrete contents of recording to implement the exemplary embodiment of the present invention's design.Equally, can be with the fuzzy the present invention of unnecessary details due to known function or structure, therefore omit its detailed description.
Fig. 1 shows the block diagram of the electronic installation 100 of the embodiment of total design according to the present invention.
With reference to Fig. 1, electronic installation 100 can comprise: controller 110, functional devices (or functional element or functional unit) 120 and communication interface 200.Electronic installation 100 can use serial line interface and inside or external device communication, for example, be personal computer (PC), laptop computer, flat computer device, PMP, smart phone, printer and scanner.
Controller 110 can be controlled the parts in electronic installation 100.Controller 110 can determine whether to control the yield value postemphasising in communication interface 200.The yield value that controller 110 can determine in the situation that the operation change of electronic installation 100 (for example,, when starting electronic installation 100, or when initialize communication interface 200) needs control to postemphasis.
Controller 110 can be controlled communication interface 200 and adjust the yield value postemphasising in communication interface 200.If determine and need ride gain value as mentioned above, controller 110 can be controlled communication interface 200 and adjust the yield value postemphasising in communication interface 200.Controller 110 can utilize the look-up table (as described below) of storing in storage device, and controls the yield value that postemphasises.Referring to Figure 14 and 15, describe and use look-up table to control further illustrating of postemphasising and gain.
Controller 110 can be determined the operator scheme of electronic installation 100.Particularly, controller 110 can by considering whether there is the time cost that user controls, user controls and whether connects power supply, determining the operator scheme of electronic installation 100.The normal mode that operator scheme can comprise battery saving mode, the battery mode of the battery of installing is provided in the situation that not providing external power source to operate and utilize the outside power supply providing to operate.
Functional devices 120 can be carried out its predetermined function.Functional devices 120 can be used communication interface 200 to communicate by letter with controller 110, and carries out predetermined function according to the control of controller 110.Functional devices 120 can be to read the CD-ROM of data of optical disk, DVD reader or Blu-ray player, and can be nonvolatile memories such as hard disk drive (HDD) or solid-state drive (SDD), and in the situation that electronic equipment 100 is combination unit, can also be that usage data is carried out the print engine of printing and/or the scanner of carrying out scanning on print media.
Communication interface 200 can transmit and receive data between functional devices 120 and controller 110.Communication interface 200 can transmit and receive data by serial interface method.The operation transmitting and receive data by serial approach is described referring to Fig. 4.Serial line interface can be serial ATA (SATA).Meanwhile, in one embodiment, communication interface 200 can operate according to serial interface method; Yet communication interface 200 can be supported other interface methods and serial interface method when operation.
According to the electronic installation 100 of an embodiment, can control adaptably the yield value postemphasising in communication interface with system environments.Therefore, user can use safer or more reliably and newly be installed to the high-speed communication of the equipment in electronic installation.
Fig. 2 shows the block diagram of the electronic installation 100 ' of the embodiment of total design according to the present invention.
With reference to Fig. 2, electronic installation 100 ' can comprise: controller 110, functional devices 120, user interface 130, storage device 140 and communication interface 200.
The controller 110 of the electronic installation 100 ' of Fig. 2, functional devices 120 and communication interface 200 can be similar to the electronic installation 100 of Fig. 1, and are described in Fig. 1, do not further illustrate for the sake of brevity.
User interface 130 can comprise various function keys, and the various information that can display electronics assemblies 100 ' provide, and function key can be used for the function that arranges or select electronic installation 100 ' to provide by user.User interface 130 can be with such as the touch-screen of input and output unit or touch pad are provided or mouse and the combined forms such as equipment of monitor are realized simultaneously.
Storage device 140 can storing driver electronic installation 100 ' program.Storage device 140 can be stored the program of the class that comprises various command language when operation.Program can comprise MBR (MBR, or GUID partition table (GTP)) and operating system (OS).Meanwhile, although this embodiment shows storage device 140 and controller 100 directly transmits and receive data, storage device 140 can be communicated by letter with controller 110 by communication interface 200, as shown in Figure 3.Storage device 140 and controller 110 can be connected to each other by serial interface method.
Storage device 140 can store look-up tables.Look-up table can be record or provide the yield value of a plurality of equalizers and the table of a plurality of yield values that postemphasis corresponding with a plurality of equalizer yield values.Can be according to numerous optimum experimental look-up tables of manufacturer, and can upgrade look-up table by upgrading firmware or its additive method.Can be by look-up table stores in the basic input output system (BIOS) of electronic installation.BIOS can store the essential information in order to initialization electronic installation inner part.Meanwhile, look-up table can be classified to the yield value postemphasising and by second condition, the yield value postemphasising be classified by first condition, and records said two devices.In addition, referring to Figure 14 and 15, further constructing in detail of look-up table described.
When describing Fig. 1 and 2, communication interface 200 can be located between the functional devices 120 and controller 110 in electronic installation 100, and between functional devices 120 and controller 110 sending and receiving signal.Yet communication interface 210 can be for transmitting and receive data or control signal by serial interface method, and transmit and receive data between above-mentioned two parts.In addition, although accompanying drawing shows communication interface 200, be located between parts, alternatively, communication interface 200 can with external device communication.This is further illustrating referring to Fig. 3.
Fig. 3 shows according to the present invention the electronic installation 100 of the embodiment of total design " block diagram.
With reference to Fig. 3, electronic installation 100 " can comprise controller 110, functional devices 120, user interface 130, storage device 140 and communication interface 200 '.Compare with Fig. 2, storage device 140 can be connected to controller 110 by communication interface 200 ', and communication interface 200 ' can be connected to external equipment 10.
Communication interface 200 ' can be installed by local area network (LAN) (LAN) and the Internet and radio communications such as GSM, UMTS, LTE and WiBRO electronic installation 100 " be connected to external equipment 10.
Communication interface 200 ' can transmit and receive data by serial interface method and external equipment 10.Communication interface 200 ' as shown in Figure 4 can comprise one or more parts, for example, is located at electronic installation 100 " in the first serial line interface 300 and be located at the second serial line interface 400 in external equipment 10.
In addition, as described with reference to Figure 2, communication interface 200 ' can transmit and receive data between functional devices 120, storage device 140 and controller 110 in electronic installation 100.
Fig. 4 shows the block diagram of the communication interface 200 (or 200 ') of the embodiment of total design according to the present invention.
With reference to Fig. 4, communication interface 200 can comprise the first serial line interface 300, signal transmission passage 20 and the second serial line interface 400.For more easily explanation, the parts that sent and/or received data by the first serial line interface 300 can be called the first equipment, and can be called the second equipment by the parts of the second serial line interface 400 transmissions and/or reception data.For example, the first and second equipment can be controller 110 and the functional devices 120 of Fig. 1, the controller 110 of Fig. 3 and storage device 140, or the electronic installation in Fig. 3 100 (100 ' or 100 ") and external equipment.
The first serial line interface 300 can send to the second serial line interface 400 data that receive from the first equipment by serial interface method, and to the first equipment, sends by serial interface method the signal receiving from the second serial line interface 400.The first serial line interface 300 can comprise to be carried out the first signal processor 500 of transmit operation and carries out the secondary signal processor 600 that receives operation.
The second serial line interface 400 can send to the first serial line interface 300 data that receive from the second equipment by serial interface method, and to the second equipment, sends by serial interface method the signal receiving from the first serial line interface 300.The second serial line interface 400 can comprise to be carried out the first signal processor 500 of transmit operation and carries out the secondary signal processor 600 that receives operation.
Being oppositely arranged between parts, the first serial line interface 300 and the second serial line interface 400 can have identical structure and operation.Therefore, the first signal processor 500 of the first serial line interface 300 and the secondary signal processor 600 of the second serial line interface 400 are below described.
Fig. 5 shows the detailed diagram of the first signal processor 500 of Fig. 4.For more easily explanation, the first signal processor 500 of the first serial line interface 300 is below described.
With reference to Fig. 5, first signal processor 500 can comprise receiver 510, signal generator 520, information acquisition unit 530 and controller 540.
Receiver 510 can receive the data that will send to external equipment.Receiver 510 can receive and will send to from the first equipment the data of external equipment (for example, the second equipment).
Signal generator 520 can comprise the de-emphasis unit that signal is postemphasised.Signal generator 520 can be to the data that the receive processing of postemphasising.Signal generator 520 can use default value of postemphasising (for example, use and preset the yield value that postemphasises) to the data that receive from receiver 510 processing of postemphasising.Meanwhile, can under the control of controller, adjust the value of postemphasising, that is, the yield value that postemphasises, this will be in following description." technology of postemphasising " used herein refers to and is embodied as the technology in the process of the current bit of structure, the impact owing to causing at front bit being compensated, and describe in more detail referring to Fig. 6.
Signal generator 520 can be exported the signal afterwards that postemphasises.Signal generator 520 can send to the second serial line interface 400 signal that postemphasises generating by the signal transmission passage 20 of Fig. 4.Signal generator 520 can be with the first communication speed communication before the adjustment value of postemphasising, then after the adjustment value of postemphasising with the communication of second communication speed.
Information acquisition unit 530 can receive equalizer information from external equipment (for example,, from the second serial line interface 400).Information acquisition unit 530 can be used serial interface method or other interface methods, and for example from the second serial line interface 400, receives equalizer information from external equipment.The equalizer information of describing by other interface methods referring to Figure 12 receives.The equalizer information of describing by serial interface method referring to Figure 13 receives.
Controller 540 can be adjusted the value of postemphasising of signal generator 520.Controller 540 can use the equalizer information that receives from information acquisition unit 530 and pre-stored look-up table, the value of postemphasising that selection will be applied in signal generator 520, and according to this value of postemphasising, adjust the value of postemphasising of signal generator 520.
Meanwhile, as shown in figure 15, the value of postemphasising according to condition providing can be provided look-up table, for example the value of postemphasising of the value of postemphasising of first condition and second condition.Controller 540 can determine that one of value of postemphasising under the value of postemphasising under first condition and second condition is applied.For example, if need power saving in communication, controller 540 can be determined the value of postemphasising that will use under the first condition of paying the utmost attention to size waveforms.If signal timing is more important than power saving, controller 540 can be determined the value of postemphasising that will use under the second condition of paying the utmost attention to regularly width.
Controller 540 can be determined the communication speed of signal processor 500.When in the situation that while not knowing that the equalizer information of the second serial line interface is carried out high-speed communication immediately, signal characteristic may be deteriorated, as shown in Figure 20 B.Controller 540 can be when initialize communications (for example,, when starting electronic installation) control signal generator 520 is with the low-speed handing of the first communication speed.If adjusted the value of postemphasising of signal generator 520, controller 540 can control signal generator 520 with the high speed operation of second communication speed.Like this, first signal processor 500 can be adjusted the value of postemphasising adaptively, and user is can be in the situation that carrying out serial communication operation with new equipment safer and use more reliably and be newly installed to the high-speed communication of the equipment of electronic installation 100 (100 ').
Meanwhile, more than having described first signal processor 500 can send by executive signal.Yet, can provide first signal processor 500 to comprise parts as shown in Figure 8.The structure of first signal processor 500 can be identical with the serial line interface shown in Fig. 4.
In addition even if described above controller 540, can be included in first signal processor 500, but controller 540 can be arranged on the outside of first signal processor 500.For example, the function that the controller 110 in Fig. 1 to 3 can implementation controller 540, and in this case, controller 110 can be BIOS.
Fig. 6 shows the technology of postemphasising, and the weighting with primary signal 610a, primary signal 610a postpones contrary 620a and the signal 630a through compensating.
If each bit of data sends the bandwidth that is regularly greater than transmission channel, signal may have the wave distortion being subject in front bit affects, and this distortion is also known as intersymbol interference (ISI).
The waveform loss causing in order to improve ISI, the technology of postemphasising can be used for compensating the impact at front bit when producing current bit, as shown in Figure 6.Figure 7 illustrates the circuit of the technology of postemphasising.
Meanwhile, with reference to Fig. 7, when technology is postemphasised in application, can be adjusted at by ride gain value the compensativity of front bit affects.In one embodiment, can adjust the compensativity of postemphasising in processing to signal VOD according to the compensativity of equalizer, this will be in following description.
Fig. 8 shows secondary signal processor 600.For more easily explanation, the secondary signal processor 600 in the second serial line interface 400 is below described.
With reference to Fig. 8, secondary signal processor 600 can comprise signal receiver 610, output unit 620 and information provider 630.
Signal receiver 610 can comprise equalizer.Signal receiver 610 can be used default equalizer values to carry out equilibrium treatment to the signal receiving from external equipment.The detailed processing of equalizer is described referring to Fig. 9 and 10.
Output unit 620 can be exported the signal through equilibrium treatment.Output unit 620 can provide in signal receiver 610 signal through equilibrium treatment to the second equipment.
Information provider 630 can signalization receiver 610 equalizer values.Information provider 630 can pre-stored equalizer settings.If secondary signal processor 660 starts and initialization, equalizer settings that can be pre-stored are set to the equalizer values of signal receiver 610.Equalizer settings can be stored in the ROM of storage and the information of device-dependent.
Information provider 630 can for example, provide the equalizer information corresponding with default equalizer values to external equipment (, the first serial line interface 300).Information provider 630 can provide the information relevant with the equalizer values (more specifically, equalizer yield value) of signal receiver 610 to the first serial line interface 300.
According to the secondary signal processor 600 of above embodiment, can provide equalizer information, to adjust the yield value that postemphasises of first signal processor 500, and therefore high-speed communication can be carried out safer and more reliably.
Meanwhile, more than describe secondary signal processor 600 and can receive signal.Yet secondary signal processor 600 can be implemented as the parts that comprise as shown in Figure 5.The structure of secondary signal processor 600 can be identical with the serial line interface shown in Fig. 4.
Fig. 9 is used for illustrating equalizer techniques.
Equalizer techniques can be removed the intersymbol interference (ISI) on receiving terminal, to improve its waveform.One of representative equalizer techniques is decision feedback equalization (DFE).When signal transmission passage is linear time invariant (LTI) system, ISI can analyze the some overlapping waveform b[n-2 into time shift pulse], b[n-1], b[n], b[n+1], as shown in Figure 9.DFE method can be used ISI analytical method as shown in Figure 9, removes the waveform at front bit from current bit, and only recovers the waveform of current bit.Figure 10 illustrates the circuit of equalizer techniques.
Meanwhile, with reference to Figure 10, when application is during equalizer techniques, for example, can adjust by controlling one or more yield value h1, h2, h3, h4, h5 the degree of compensation waveform " in ".When realizing, according to the yield value postemphasising, can adjust the compensativity of processing equalizer.Can use the equalizer information adjustment yield value that postemphasises.Yet when realizing, receiving terminal can receive the information of yield value of postemphasising from transmitting terminal, and can this value be adjusted to equalizer yield value in response to the yield value that postemphasises receiving.
Figure 11 shows the signal processing results of equalizer.Figure 11 shows the waveform (a) of not applying equalizer techniques and the waveform (b) of having applied equalizer techniques.
With reference to the waveform (a) of Figure 11 and (b), can effectively remove ISI by application equalizer techniques.
Meanwhile, as mentioned above, when with the high-speed communication of GHz bandwidth, transmitting terminal can be used the technology of postemphasising, and receiving terminal can be used equalizer techniques.In the sendaisle of source or installed in the system of receiver, postemphasis yield value and the equalizer yield value of optimization can be set.Yet, if user arbitrarily arranges equipment, owing to may not can finding the equalizer settings of system, therefore can use separately the default yield value that postemphasises, and not consider equalizer characteristic.
Yet, as described in above when conventional art is described, if do not consider the equalizer characteristic setting value of postemphasising, may there is catastrophe failure.In one embodiment, can adjust the yield value that postemphasises by consideration equalizer information (in other words, equalizer yield value).Referring to Figure 12 and 13, the method that the equalizer information on receiving terminal is received is described.Referring to Figure 14 and 15, describe to use the postemphasis method of yield value of the equalizer information adjustment receiving.
Figure 12 shows the operation of the transmission equalizer information of the embodiment of total design according to the present invention.
With reference to Figure 12, communication interface 200 can comprise the first serial line interface 300 and the second serial line interface 400.
The first serial line interface 300 can be to the data that receive from the first equipment processing of postemphasising, and processes to the second serial line interface 400 outputs the data that obtain.Meanwhile, above accompanying drawing shows the first serial line interface 300 and can comprise first signal processor 500; Yet when realizing, the first serial line interface 300 can also comprise secondary signal processor 600.
The second serial line interface 400 can carry out equilibrium treatment to the signal receiving from the first serial line interface 300, and provides result to the second equipment.Meanwhile, in above embodiment, the second serial line interface 400 can only comprise secondary signal processor 600; Yet when realizing, the second serial line interface 400 can also comprise first signal processor 500.
If communication interface 200 initialization and the first serial line interface 300 requests, the second serial line interface 400 can be used another communication bus that the equalizer information of application in signal receiver 610 is provided to the first serial line interface 300, more specifically, equalizer yield value.Communication bus can be I2C; Yet this is not limited to this.
The controller 540 that receives equalizer information can be selected the yield value that postemphasises that will apply in signal generator 520 with the equalizer information receiving and pre-stored look-up table, and according to the yield value that postemphasises of selected yield value control signal generator 520.
Diagram has shown that controller 540 can be the external equipment of the first serial line interface 300.Yet when realizing, controller 540 can be arranged in the first serial line interface 300.
The first serial line interface 300 can comprise receiver 510, signal generator 520 and the gain register 550 of postemphasising, as shown in Fig. 5 and 12.The second serial line interface 400 can comprise signal receiver 610, output unit 620 and information provider 630, as shown in Fig. 8 and 12.Controller 540 can comprise information acquisition unit 530 and system ROM (for example, the table 560 in BIOS).
Figure 13 shows the operation of the transmission equalizer information of the embodiment of total design according to the present invention.
With reference to Figure 13, communication interface 200 can comprise the first serial line interface 300 and the second serial line interface 400.
The first serial line interface 300 can be to the data that receive from the first equipment processing of postemphasising, and to the second serial line interface 400 Output rusults.The first serial line interface 300 can carry out equilibrium treatment to the signal receiving from the second serial line interface 400, and provides result to the first equipment.
The second serial line interface 400 can carry out equilibrium treatment to the signal receiving from the first serial line interface 300, and provides result to the second equipment.The second serial line interface 400 can be to the data that receive from the second equipment processing of postemphasising, and provides result to the first serial line interface 300.
If communication interface 200 initialization and the first serial line interface 300 request equalizer information, the second serial line interface 400 can be used the first signal processor 500 in the second serial line interface 400 that the equalizer information of application in signal receiver 610 is provided to the first serial line interface 300, for example, equalizer yield value.
The controller 540 that receives equalizer information can use the equalizer information that receives and pre-stored look-up table, the yield value that postemphasises that selection will be applied in signal generator 520, and the yield value that postemphasises of signal generator 520 is adjusted into selected yield value.
Diagram has shown that controller 540 can be the external equipment of the first serial line interface 300.Yet when realizing, controller 540 can be arranged in the first serial line interface 300.
The yield value that postemphasises of the equalizer information adjustment transmitting terminal that uses receiving terminal has more than been described.Yet, when realizing, can use the equalizer yield value of the yield value adjustment receiving terminal that postemphasises of transmitting terminal.
Figure 14 shows according to the present invention the example of spendable look-up table in the communication interface of electronic installation of embodiment of total design.
With reference to Figure 14, according to the look-up table of embodiment can comprise a plurality of equalizer yield values and with each corresponding a plurality of yield value that postemphasis in a plurality of equalizer yield values.For example, if equalizer yield value is 3dB, transmitting terminal can select to have in 3dB the yield value of the 2dB that optimizes waveform.
Look-up table can be stored in the BIOS of storage in order to the essential information of initialization electronic installation.Traditional B IOS has the fixing value of postemphasising.Yet in one embodiment, due to the look-up table having as shown in Figure 14 or Figure 15, therefore can adjust the value of postemphasising adapts to connected equipment.
Although accompanying drawing shows the yield value that postemphasises that an equalizer yield value has a plurality of correspondences, when realizing, an equalizer yield value can have a corresponding gain of postemphasising.
Although more than described, can determine the yield value that postemphasises under a condition with look-up table, in other words, equalizer yield value, can determine the yield value that postemphasises under each condition in a plurality of conditions.This is further illustrating referring to Figure 15.
Figure 15 shows according to the present invention spendable look-up table in the communication interface of electronic installation of embodiment of total design.
With reference to Figure 15, according to the look-up table of another embodiment, can comprise a plurality of equalizer yield values, under first condition in response under each the yield value that postemphasises, second condition in a plurality of equalizer yield values in response to each the yield value that postemphasises in a plurality of equalizer yield values.First condition can be paid the utmost attention to the size waveforms of signal, and second condition can be paid the utmost attention to the timing width of signal.
According to system made, the surplus (margin) of setting up of size waveforms may be not enough, or the surplus of setting up of waveform timing width may be not enough.Therefore, according to another embodiment, can provide as shown in figure 15 two different conditions, and foundation structure device can optionally provide priority according to system margin.
For example, in the battery mode of request power saving, can use the yield value that postemphasises under first condition.Particularly, if the equalizer yield value of receiving terminal is 2dB, and if the operator scheme of electronic installation is battery mode, transmitting terminal can be selected the yield value of 3.5dB, and can utilize selected yield value 3.5dB to adjust the yield value that postemphasises of transmitting terminal.
Selection can be based on electronic installation as above operation, and can be by arranging of BIOS be determined.Particularly, utilize the menu of complementary metal oxide silicon (CMOS) in BIOS, user can select one of first condition and second condition that the value of postemphasising is set in advance, and controller can be selected the value of postemphasising according to user.
Figure 16 shows the flow chart of the signal processing method of the electronic installation of the embodiment of total design according to the present invention.
With reference to Figure 16, at operation S1610 place, can receive the data that will send to external equipment.Can be from the first equipment receiving data, to send result to external equipment (the second equipment particularly).
At operation S1620, can use the default value of postemphasising, the data of receiving are postemphasised and processed the data that also transmission processing obtains.Can use default value of postemphasising (the postemphasis yield value relevant with the data that receive particularly) to realize the processing of postemphasising.
At operation S1630 place, can receive equalizer information from external equipment.Use serial interface method or other interface methods, can receive equalizer information from external equipment, particularly equalizer yield value.
At operation S1640 place, can the equalizer information based on receiving adjust the default value of postemphasising.Particularly, can select the value of postemphasising with the equalizer information receiving and pre-stored look-up table, and can utilize the selected value of postemphasising to adjust the value of postemphasising of signal generator 520.
According to the signal processing method of embodiment can by from receiving terminal, receive equalizer information for system suitability adjust the yield value that postemphasises.Therefore,, if new equipment is installed, can more safely use the high-speed communication with new installed equipment.The signal processing method of Figure 16 can be in thering is Fig. 1 to 3 electronic installation, the signal processor that there is the communication interface of parts in Fig. 4 and there are parts in Fig. 5 of parts, or electronic installation, another communication interface and another signal processor with miscellaneous part are carried out.
In addition, according to the signal processing method of embodiment as mentioned above can by comprise on computers can with the program of algorithm realize.Said procedure can be stored and provide in nonvolatile computer-readable medium.
Nonvolatile computer-readable medium can not be the medium of temporarily storing data, for example, and register, high-speed cache or memory, but the medium of the semi-permanent storage data of device-readable.Particularly, above-mentioned various application or program can for example, be stored and provide in nonvolatile computer-readable medium (, CD, DVD, hard disk, Blu-ray disc, USB, storage card or ROM).
Figure 17 shows according to the present invention the flow chart of spendable signal processing method in the communication interface of electronic installation of embodiment of total design.
At operation S1710 place, can receive the signal that serial line interface sends.
At operation S1720 place, can carry out to the received signal equilibrium treatment by default equalizer values, and can export the signal through equilibrium treatment at operation S1720 place.
At operation S1730 place, can provide the equalizer information corresponding with presetting equalizer values to external equipment.The information of the equalizer values of current use (equalizer yield value particularly) in the time of can using serial interface method or other interface methods to provide equilibrium treatment to external equipment.
According to the signal processing method of another embodiment as mentioned above, can provide equalizer information to transmitting terminal.Therefore, transmitting terminal can for system suitability adjust the yield value that postemphasises, and user can use high-speed communication safer and reliably.The signal processing method of Figure 17 can be in thering is Fig. 1 to 3 electronic installation, the signal processor that there is the communication interface of parts in Fig. 4 and there are parts in Fig. 8 of parts, or electronic installation, another communication interface and another signal processor with miscellaneous part are carried out.
In addition, according to the signal processing method of embodiment as mentioned above can by comprise on computers can with the program of algorithm realize.Program can be stored and provide in nonvolatile computer-readable medium.
Nonvolatile computer-readable medium can not be the medium of temporarily storing data, for example, and register, high-speed cache or memory, but the medium of the semi-permanent storage data of device-readable.Particularly, above-mentioned various application or program can for example, be stored and provide in nonvolatile computer-readable medium (, CD, DVD, hard disk, Blu-ray disc, USB, storage card or ROM).
Although illustrated and described the minority embodiment of the total design of the present invention, but it will be understood by those skilled in the art that, can under the prerequisite that does not deviate from the total principle of conceiving of the present invention and spirit, change these embodiments, the scope of the total design of the present invention is limited by claims and equivalent thereof.

Claims (12)

1. a signal processor, comprising:
Receiver, reception will send to the data of external equipment;
Signal generator, uses the default value of postemphasising to the data that receive processings of postemphasising, and exports to external equipment the data that processing obtains;
Information acquisition unit, receives equalizer information from external equipment; And
Controller, the value of postemphasising of the equalizer information control signal generator based on receiving.
2. signal processor according to claim 1, wherein, equalizer information is included in the yield value of the equalizer arranging in external equipment.
3. signal processor according to claim 1, also comprises:
Storage device, store look-up tables, described look-up table has a plurality of equalizer yield values and a plurality of the postemphasis yield values corresponding with described a plurality of equalizer yield values,
Wherein, the look-up table of controller based on storing in storage device and the equalizer information receiving, the yield value that postemphasises of control signal generator.
4. signal processor according to claim 3, wherein,
Look-up table meets first condition based on the yield value that postemphasises or second condition is classified and storage is postemphasised yield value, and
The mode of operation of basis signal processor, controller carrys out the yield value that postemphasises of control signal generator according to the yield value that postemphasises that postemphasises yield value and meet second condition that meets first condition.
5. signal processor according to claim 4, wherein, first condition is paid the utmost attention to the size of signal waveform, and second condition is paid the utmost attention to the width of signal timing.
6. signal processor according to claim 1, wherein, controller control signal generator before adjusting the value of postemphasising of signal generator with the first communication speed communication, and after the value of postemphasising of adjustment signal generator with the second communication speed communication faster than the first communication speed.
7. signal processor according to claim 1, also comprises:
Signal receiver, is used default equalizer values to carry out equilibrium treatment to the signal receiving from external equipment; And
Output unit, output is through the signal of equilibrium treatment.
8. signal processor according to claim 7, wherein, information acquisition unit is used signal receiver to receive the equalizer information of external equipment.
9. signal processor according to claim 1, wherein, information acquisition unit receives the equalizer information of external equipment by the different interface method of the interface method from signal generator.
10. an electronic installation, comprising:
Carry out the functional element of predetermined function;
Control the controller of functional element; And
Communication interface provides transfer of data between functional element and controller,
Wherein, communication interface comprises: the first serial line interface, from controller receiving data, postemphasises and processes and export the data that processing obtains the data that receive; With the second serial line interface, receive from the signal of the first serial line interface output, carry out to the received signal equilibrium treatment, and provide the signal through equilibrium treatment to functional element,
Wherein, the first serial line interface receives equalizer information from the second serial line interface, and the equalizer information based on receiving is adjusted the yield value that postemphasises of the first serial line interface.
11. electronic installations according to claim 10, wherein,
The second serial line interface receives data from functional element, and to the data processing of postemphasising, and output processes the data that obtain, and
The first serial line interface receives from the signal of the second serial line interface output, carries out to the received signal equilibrium treatment, and the signal obtaining is provided to controller.
12. 1 kinds of signal processing methods, comprising:
Reception will send to the data of external equipment;
Use the default value of postemphasising to postemphasis and process the data that also transmission processing obtains the data that receive;
From external equipment, receive equalizer information; And
Default value of postemphasising of equalizer information adjustment based on receiving.
CN201310192281.0A 2012-08-08 2013-05-22 Signal processing device, electronic apparatus, and signal processing method Pending CN103581077A (en)

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